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UBWIZA N'UBUZIMA
UBUKORIKORI
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IMYIDAGADURO
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IBYAMBARWA
Nickel: Oxide Cubes Reduced with Carbon in a Muffle Furnace
Nickel can be won from its oxide with carbon, as in Thorpe's Dictionary (1912): the oxide is bound with sugar syrup, moulded into cubes, dried and heated with carbon in a muffle furnace for about 24 hours. The heat is not enough to melt the nickel. Nickel made this way is somewhat brittle; a broken piece shows a dull-grey, crystalline face.
The picture: our diagram.
Hagati
2 days
Amabwiriza
1
1
Bind the oxide with sugar syrup
Bind the oxide with sugar syrup
Mix nickel oxide with sugar syrup. Thorpe gives no amounts. Ours: syrup from white sugar dissolved in warm water.
Ibikoresho by'iyi ntambwe:
Oxide ya nikeli1 as requiredIbikoresho bikenewe:
Isukari y'umweru
Amazi
Igikombe cy'Ikirahure
Urubaho rushyushya
Igikoresho cyo kuvanga
Uturindantoki tw'ikawusu2
2
Mould into cubes and dry
Mould into cubes and dry
Mould the paste into cubes and dry them. Ours: shaped by hand, dried in a drying oven.
Ibikoresho bikenewe:
Ifuru yo kumishahoUturindantoki tw'ikawusu3
3
Heat with carbon in a muffle, about 24 hours
Heat with carbon in a muffle, about 24 hours
Heat the cubes with carbon in a muffle furnace for about 24 hours. Thorpe gives no temperature; it stays below the melting point of nickel.
Ibikoresho bikenewe:
Karubone
Ifuru ya muffle
Amakoro y'Icyombo Gishongesha
Uturindantoki twihanganira ubushyuheIbikoresho
1- 1 as requiredUmwanya
Ibikoresho bikenewe
11- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
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